Paper Info
Title
Load-Independent Control of Switching DC-DC Converters With Freewheeling Current Feedback
Abstract
A new control scheme of freewheeling current control is proposed for switching DC-DC converters. The output voltage is regulated by a comparator operation, and in the main current loop, the freewheeling current is feedback-controlled to a reference level in average. The converter control loop is no longer dependent on the values of the inductor, output capacitor, or the load equivalent resistance. The design of a loop compensator is therefore greatly simplified and the loop response can be very fast approaching that of a hysteresis converter. As an example, a single-inductor bipolar-output DC-DC converter with the proposed freewheeling current control is implemented in a 0.5 mum BiCMOS process. The converter has one positive output of 4 V and one negative output of -4.8 V. A maximum efficiency of 81% is achieved at a total output power of 250 mW with a switching frequency of 800 kHz.
Year
DOI
Venue
2008
10.1109/JSSC.2008.2005709
ISSCC
Keywords
Field
DocType
freewheeling current feedback,switching convertors,dc-dc power conversion,single-inductor multiple-output (simo) converters,voltage 4 v,dc-dc power convertors,bicmos integrated circuits,switching dc-dc converters,switching noise,circuit feedback,loop compensator,frequency 800 khz,extra energy regulation,single-inductor multiple-output converters,size 0.5 mum,sub-harmonic oscillation,freewheeling current regulation,freewheeling current control,current feedback,electric current control,power 250 mw,current sensing gain,slope compensation,comparators (circuits),single-inductor bipolar-output converter,bicmos process,power integrated circuits,comparator,load-independent control,power bicmos process,cmos analog integrated circuits,regulation,harmonic oscillator
Boost converter,Comparator,Capacitor,Control theory,Computer science,Voltage,Inductor,Electronic engineering,Converters,Current loop,Control system
Conference
Volume
Issue
ISSN
43
12
0018-9200
ISBN
Citations 
PageRank 
978-1-4244-2011-7
4
0.98
References 
Authors
3
5
Name
Order
Citations
PageRank
Young-Jin Woo1479.63
Hanh-Phuc Le233741.77
Gyu-Ha Cho313821.71
Gyu-Hyeong Cho440176.39
Seong-Il Kim562.34